222 Bulletin Vanderbilt Marine Museum, Vol. VI 



the dactyli are unguiculate and do not have a small secondary hook 

 at the base of the larger one. The ischium of the first pair of legs 

 has two stout spines at the base of the distal end of the inner mar- 

 gin; the merus is beset with seven spines on the inner margin 

 and one, smaller, at the apex of the outer margin ; the carpus is 

 short, vdth only one spine, and the propodus has four sharp spines 

 on the inner margin ; the dactyl is a strong, curved hook. 



The fourth to seventh pairs of legs, inclusive, are ambulatory, 

 similar, slender, beset with strong spines on the inner and distal 

 margins of the third to sixth joints ; these spines are simple, except 

 some of those on the distal margin of the carpus, which are forked. 

 The basis is the strongest joint of the leg; the ischium is half as 

 long as the basis, slenderer ; the merus is about two-thirds as long 

 as the ischium, about equal to the carpus ; the propodus is about 

 equal to the carpus and slenderer; the dactyl is short, with a 

 strong, curved, hook-like tip. 



Remarks : The "Alva" specimen, which is a male, differs from 

 Mr. Hale's type, in that the first joint of the peduncle of the an- 

 tennae is no longer than the second joint. The space between the 

 eyes, at its narrowest point on the dorsal surface, is apparently 

 less than that figured by Hale. The "Alva" specimen, a male, 

 appears to be somewhat narrower than Hale's type, and has the 

 epimeral plates more visible in a dorsal view; appearing some- 

 what as do those figured by Miss Richardson for A. similis. How- 

 ever, the "Alva" specimen conforms with A. confine in all other 

 characters. 



References : Argathona confine, Hale, H. M., Trans, and Proc. 

 Roy. Soc. S. Australia, vol. XLIX, p. 164, text fig. 17a-j, 

 1925. 



Order: AMPHIPODA 

 Family: LYCAEIDAE 



Genus: BRACHYSCELUS Bate 

 Brachyscelus crusculum Bate 



Plate 66 



Type : The locality of Mr. Bate's type is unknown. The speci- 

 men is in the collections of the British Museum of Natural History. 



Distribution: North Pacific Ocean, Lat. 24° 49', Long. 138° 

 34' E., surface (Stabbing) ; Atlantic Ocean, "Hirondelle" Stations 



